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The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants

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The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants. / Ruffell, Jonathan E.; Farmer, Thomas J.; MacQuarrie, Duncan J.; Stark, Moray S.

In: Industrial and Engineering Chemistry Research, 19.09.2019, p. 1-12.

Research output: Contribution to journalArticle

Harvard

Ruffell, JE, Farmer, TJ, MacQuarrie, DJ & Stark, MS 2019, 'The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants', Industrial and Engineering Chemistry Research, pp. 1-12. https://doi.org/10.1021/acs.iecr.9b02780

APA

Ruffell, J. E., Farmer, T. J., MacQuarrie, D. J., & Stark, M. S. (2019). The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants. Industrial and Engineering Chemistry Research, 1-12. https://doi.org/10.1021/acs.iecr.9b02780

Vancouver

Ruffell JE, Farmer TJ, MacQuarrie DJ, Stark MS. The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants. Industrial and Engineering Chemistry Research. 2019 Sep 19;1-12. https://doi.org/10.1021/acs.iecr.9b02780

Author

Ruffell, Jonathan E. ; Farmer, Thomas J. ; MacQuarrie, Duncan J. ; Stark, Moray S. / The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants. In: Industrial and Engineering Chemistry Research. 2019 ; pp. 1-12.

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@article{7d42a9684d7041918975fbd33ae86322,
title = "The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants",
abstract = "Short chain alkenyl succinimides (ASIs) were synthesised and used as high purity chemical models to investigate the autoxidative degradation at 170 oC of polyisobutenyl succinimide dispersants (PIBSIs), a significant additive in automotive engine lubricants. Degradation products were characterised by GC-EI-MS and quantified by GC-FID. The rate of autoxidation of ASIs in a model lubricant, squalane, was also investigated. Although this is a complex molecule containing many possible sites of radical attack, all of the autoxidation products identified result from attack at the double bond or the adjacent allylic hydrogen atoms, which indicates the controlling influence of the double bond in the degradation of alkenyl succinimides, and therefore of commercial polyisobutenyl succinimide dispersants. The observed site-selective cleavage of the ASI structure, and by analogy PIBSI dispersants, would yield products that both reduce dispersancy and promote the formation of insoluble products that could have a detrimental effect on lubricant performance.",
keywords = "autoxidation, degradation, dispersant, lubricant",
author = "Ruffell, {Jonathan E.} and Farmer, {Thomas J.} and MacQuarrie, {Duncan J.} and Stark, {Moray S.}",
note = "{\circledC} 2019, The Author(s).",
year = "2019",
month = "9",
day = "19",
doi = "10.1021/acs.iecr.9b02780",
language = "English",
pages = "1--12",
journal = "Industrial & engineering chemistry research",
issn = "0888-5885",
publisher = "American Chemical Society",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The autoxidation of alkenyl succinimides - Mimics for polyisobutenyl succinimide dispersants

AU - Ruffell, Jonathan E.

AU - Farmer, Thomas J.

AU - MacQuarrie, Duncan J.

AU - Stark, Moray S.

N1 - © 2019, The Author(s).

PY - 2019/9/19

Y1 - 2019/9/19

N2 - Short chain alkenyl succinimides (ASIs) were synthesised and used as high purity chemical models to investigate the autoxidative degradation at 170 oC of polyisobutenyl succinimide dispersants (PIBSIs), a significant additive in automotive engine lubricants. Degradation products were characterised by GC-EI-MS and quantified by GC-FID. The rate of autoxidation of ASIs in a model lubricant, squalane, was also investigated. Although this is a complex molecule containing many possible sites of radical attack, all of the autoxidation products identified result from attack at the double bond or the adjacent allylic hydrogen atoms, which indicates the controlling influence of the double bond in the degradation of alkenyl succinimides, and therefore of commercial polyisobutenyl succinimide dispersants. The observed site-selective cleavage of the ASI structure, and by analogy PIBSI dispersants, would yield products that both reduce dispersancy and promote the formation of insoluble products that could have a detrimental effect on lubricant performance.

AB - Short chain alkenyl succinimides (ASIs) were synthesised and used as high purity chemical models to investigate the autoxidative degradation at 170 oC of polyisobutenyl succinimide dispersants (PIBSIs), a significant additive in automotive engine lubricants. Degradation products were characterised by GC-EI-MS and quantified by GC-FID. The rate of autoxidation of ASIs in a model lubricant, squalane, was also investigated. Although this is a complex molecule containing many possible sites of radical attack, all of the autoxidation products identified result from attack at the double bond or the adjacent allylic hydrogen atoms, which indicates the controlling influence of the double bond in the degradation of alkenyl succinimides, and therefore of commercial polyisobutenyl succinimide dispersants. The observed site-selective cleavage of the ASI structure, and by analogy PIBSI dispersants, would yield products that both reduce dispersancy and promote the formation of insoluble products that could have a detrimental effect on lubricant performance.

KW - autoxidation

KW - degradation

KW - dispersant

KW - lubricant

UR - http://www.scopus.com/inward/record.url?scp=85073147522&partnerID=8YFLogxK

U2 - 10.1021/acs.iecr.9b02780

DO - 10.1021/acs.iecr.9b02780

M3 - Article

SP - 1

EP - 12

JO - Industrial & engineering chemistry research

JF - Industrial & engineering chemistry research

SN - 0888-5885

ER -